and that's an awkward fact for the obama administration. the president is in the region, we're hearing now from officials that it's going to take a couple days for them to determine whether or not a chemical weapon is used. and let's be honest. by then, president obama will be out of the region, safely back here and in a better position to make a decision. >> john, you're there in israel for the president's visit. has this changed the tone, the tenor of the president's trip? >> without a doubt. look, the nuclear confrontation with iran is still number one. with the president sitting down with prime minister netanyahu to talk issues. but anderson, i'm in jerusalem, 135 miles to damascus. because of the threat of chemical weapons, because of the instability and uncertainty in this region, israel has the best intelligence about syria. israel also has, and bob and fran know this terrain better than i do. not only human intelligence, but there are drones, satellite images and other technological ways. if these weapons were used on a big scale of